Optoma ML300 Service Manual page 45

8. The firmware upgrade procedure will run
automatically.
9. Click "OK",then close the window.
5-2-3 Check FW version
1. Restart the unit and enter the Service Mode
(Press "Up"->"Home"->"Down"->"Zoom"
of remote control)
2. The firmware version will be shows as red
square .
ML300 Confidential
5-6